| 摘要 |
Failure detection accuracy is improved by providing: an accumulated data storage unit 30; a unit space generating module 13 which extracts, from the accumulated data storage unit, sensor values for a unit space to be used by an MT system, and which generates the unit space using condition sensor values which influence other sensor values, sensor values which are not influenced by the condition sensor values, and other sensor values which have either been nondimensionalized by module of the condition sensor values or have been adjusted by module of the condition sensor values; a signal space generating module 14 which, when a plurality of sensor values to be detected are input, uses without modification the condition sensor values and the sensor values that are not influenced by the condition sensor values, and uses the other sensor values, which have either been nondimensionalized by module of the condition sensor values or have been adjusted by module of the condition sensor values, to form a signal space; and an assessing module 16 which compares a distance, representing the relationship between the generated unit space and the generated signal space, with a certain threshold, to assess whether or not there is a possibility that any of the sensors have failed. |
